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大斜度井及水平井固井后，水泥浆在井壁上侧形成的自由水槽是油、气、水窜的主要通道。室内试验表明，ＤＳ零析水水泥浆体系较好地解决了这一问题。该体系具有失水低、流变性能好、直角稠化、水泥石质量均匀和强度高、能有效地控制水泥浆析水，使水泥浆具有良好的稳定性能和抗气窜能力强及适应范围广的特点。通过４口大斜度及水平试验井的试压和测井结果同样说明，ＤＳ水泥浆体系稳定性好，其它综合性能稳定，封固的井段未出现油、气、水窜流和其它异常现象，试压和声幅测井都达到较好的效果。
After the high-gradient wells and horizontal wells are well-cementing, the free channels formed by the cement slurry on the upper side of the shaft wall are the main channels for oil, gas and water channeling. Laboratory tests show that DS zero-flow water slurry system is a good solution to this problem. The system has the advantages of low water loss, good rheological property, thickening at right angle, uniform quality and high strength of cement stone, effective control of cement slurry water, good stability of cement slurry and anti-gas channeling ability and adaptability Wide features. Through the pressure test and logging results of 4 high-gradient and horizontal test wells, DS cement slurry system also shows good stability and other comprehensive properties are stable. There is no oil, gas, water channeling and other abnormalities in the sealed well sections Phenomenon, pressure test and amplitude logging have achieved good results.